64469878240 has 48 divisors (see below), whose sum is σ = 153880331472. Its totient is φ = 25522089984.

The previous prime is 64469878229. The next prime is 64469878267. The reversal of 64469878240 is 4287896446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2061474 + ... + 2092513.

It is an arithmetic number, because the mean of its divisors is an integer number (3205840239).

Almost surely, 2^64469878240 is an apocalyptic number.

It is an amenable number.

64469878240 is an abundant number, since it is smaller than the sum of its proper divisors (89410453232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64469878240 is a wasteful number, since it uses less digits than its factorization.

64469878240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154099 (or 4154091 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 58.

The spelling of 64469878240 in words is "sixty-four billion, four hundred sixty-nine million, eight hundred seventy-eight thousand, two hundred forty".